I can understand your concerns,you haven't mentioned that what type of Haemengioma was diagnosed on biopsy
but I would suggest that she has got Capillary Hemangioma
You also didn't mention that has she had any form of treatment for the problem.
I think if its affecting the eye sight and hearing then it certainly needed to be examined again by a dermatologist
along with an ophthalmologist to evaluate the problem.
There are different treatment options depending upon te size,number and location of the hemangiomas so it's better to consult the above mentioned doctors.
I hope you find the answer helpful.
All the best.